YARN-23. FairScheduler: FSQueueSchedulable#updateDemand() - potential redundant aggregation. (kkambatl via tucu)
git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1394322 13f79535-47bb-0310-9956-ffa450edef68
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@ -26,6 +26,9 @@ Release 2.0.3-alpha - Unreleased
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YARN-116. Add the ability to change the RM include/exclude file without
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a restart. (xieguiming and Harsh J via sseth)
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YARN-23. FairScheduler: FSQueueSchedulable#updateDemand() - potential
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redundant aggregation. (kkambatl via tucu)
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OPTIMIZATIONS
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BUG FIXES
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@ -65,6 +65,17 @@ public class FSQueueSchedulable extends Schedulable implements Queue {
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long lastTimeAtMinShare;
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long lastTimeAtHalfFairShare;
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// Constructor for tests
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protected FSQueueSchedulable(FairScheduler scheduler, FSQueue fsQueue,
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QueueManager qMgr, QueueMetrics metrics, long minShare, long fairShare) {
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this.scheduler = scheduler;
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this.queueMgr = qMgr;
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this.queue = fsQueue;
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this.metrics = metrics;
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this.lastTimeAtMinShare = minShare;
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this.lastTimeAtHalfFairShare = fairShare;
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}
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public FSQueueSchedulable(FairScheduler scheduler, FSQueue queue) {
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this.scheduler = scheduler;
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this.queue = queue;
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@ -93,19 +104,27 @@ public class FSQueueSchedulable extends Schedulable implements Queue {
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*/
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@Override
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public void updateDemand() {
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// Compute demand by iterating through apps in the queue
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// Limit demand to maxResources
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Resource maxRes = queueMgr.getMaxResources(queue.getName());
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demand = Resources.createResource(0);
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for (AppSchedulable sched: appScheds) {
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sched.updateDemand();
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Resource toAdd = sched.getDemand();
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LOG.debug("Counting resource from " + sched.getName() + " " + toAdd.toString());
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LOG.debug("Total resource consumption for " + this.getName() + " now " + demand.toString());
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if (LOG.isDebugEnabled()) {
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LOG.debug("Counting resource from " + sched.getName() + " " + toAdd
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+ "; Total resource consumption for " + this.getName() + " now "
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+ demand);
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}
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demand = Resources.add(demand, toAdd);
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if (Resources.greaterThanOrEqual(demand, maxRes)) {
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demand = maxRes;
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break;
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}
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}
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// if demand exceeds the cap for this queue, limit to the max
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Resource maxRes = queueMgr.getMaxResources(queue.getName());
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if(Resources.greaterThan(demand, maxRes)) {
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demand = maxRes;
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if (LOG.isDebugEnabled()) {
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LOG.debug("The updated demand for " + this.getName() + " is " + demand
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+ "; the max is " + maxRes);
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}
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}
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@ -0,0 +1,42 @@
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package org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair;
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import static org.junit.Assert.assertTrue;
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import static org.mockito.Mockito.mock;
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import static org.mockito.Mockito.when;
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import org.apache.hadoop.yarn.api.records.Resource;
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import org.apache.hadoop.yarn.server.resourcemanager.resource.Resources;
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import org.junit.Before;
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import org.junit.Test;
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import org.mockito.Mockito;
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public class TestFSQueueSchedulable {
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private FSQueueSchedulable schedulable = null;
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private Resource maxResource = Resources.createResource(10);
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@Before
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public void setup() {
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String queueName = "testFSQueue";
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FSQueue mockQueue = mock(FSQueue.class);
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when(mockQueue.getName()).thenReturn(queueName);
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QueueManager mockMgr = mock(QueueManager.class);
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when(mockMgr.getMaxResources(queueName)).thenReturn(maxResource);
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schedulable = new FSQueueSchedulable(null, mockQueue, mockMgr, null, 0, 0);
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}
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@Test
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public void testUpdateDemand() {
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AppSchedulable app = mock(AppSchedulable.class);
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Mockito.when(app.getDemand()).thenReturn(maxResource);
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schedulable.addApp(app);
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schedulable.addApp(app);
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schedulable.updateDemand();
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assertTrue("Demand is greater than max allowed ",
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Resources.equals(schedulable.getDemand(), maxResource));
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}
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}
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